commodore diff into fb wagon

fat62ek · Post by **fat62ek** » Sat Apr 19, 2008 8:23 am

hi guys ive been offered a low ks diff 4 speed and engine from a early model commodore. has anyone ever done a diff conversion was there much involved or should i stick with using a hr diff. are there any other diff types that people have used other than 9 inch that are the right length from the start instead of having them shortend. ie centura diff maybe. i dont really want to have to modify the floor to put a bigger diff in if i can help it. thanks wayne

Post by **Blacky** » Sat Apr 19, 2008 5:25 pm

Wayne, the best diffs widthwise are either torana or Volvo - do a search on the site for info on Volvo diffs for the best models to pinch them from etc, the LJ type torrys are a common swap as well as they are a bit narrower .

ipg · Post by **ipg** » Sat Apr 19, 2008 6:29 pm

i put a vl turbo diff in my ute, but check out what sammys doing

some cool work!

fat62ek · Post by **fat62ek** » Sun Apr 20, 2008 7:42 am

ok thanks guys. i will check into that. it was just that ive been offered a complete running gear from a vc commodore wagon with very low ks on the clock.was trying to keep it all the same as im probly getting the diff anyway. but the volvo option sounds good.that way i get disc brake aswell. ive heard that the centres out of these are interchangeable with the holden item . maybe a different spline .not sure if its true but would be nice if it deos . thanks again wayne

Sammy · Post by **Sammy** » Mon Apr 21, 2008 1:14 pm

for my money i'd avoid the VC commodore diff, they really arn't alot stronger than the banjo .... having said that, if you wanted to do it, get a UC torana diff, its the same centre as the VC but its the same length as the HR diff ... i did one of these conversions in my EK Wagon a while back ....

the easiest way to get strength without going for a 9 inch is to get a VN commodore diff kit down ... which will then allow you to use 2 short vn axles (normally they have a long and a short axle) and just have the diff centre offset a bit.

this is what i have in my FB Ute, only cost me $300 that was supplying them a diff, and getting it shortened and also HR mounts welded to it etc...

if your serious about it let me know and i can point you in the right direction.

only thing with doing it this way is you go to commodore stud pattern ... i guess thats up to you if you want to or not. i believe a certain model volvo has the same stud pattern as old holdens, but i don't know much about them other than that

NoMAD · Post by **NoMAD** » Mon Apr 21, 2008 3:41 pm

Fat62ek,

see this running thread...

http://www.fbekholden.com/forum/viewtopic.php?t=1647

once i get that boot done i will be back on to this so will let you all know!

Regards
NoMAD